National Centenarian Awareness Project
- Nonprofit organization seeking to contact and honor all those 100 years old and older for their contributions to the past. Interviews, greeting cards and registry.

New England Centenarian Study
- The NECS is the largest genetic study of centenarians in the world with approximately 1,000 subjects enrolled including centenarians, their siblings and children and control subjects.

Supercentenarians
- Lists the oldest authenticated centenarians above 112 years old and offers an archive of research articles.